Geology Chapter 5-6

Water falling in Illinois would ultimately end up where?

gulf of mexico

At which of the following locations is deposition occurring?

it occurs on the insides of the curves- B, D

At which of the following locations is erosion occurring?

it occurs on the outsides of the curves- A, C, E

What do we call mudflows produced by the melting of snow and glaciers on volcanoes?

lahars

Mauna Loa in Hawaii is an example of which type of volcano?

shield voncano

Which volcano type involves layers of pyroclastic debris and lava flows?

stratovolcano

Mt. St. Helens in Washington is an example of which type of volcano?

stratovolcanoe

trunk stream

the primary river flowing out of a drainage basin

Why are so many volcanoes found on the Ring of Fire around the margin of the Pacific Ocean?

Many subduction zones occur there.

trunk stream

Mississippi River

Where does a meandering river run the fastest?

On the outside of a bend

If you were running water through a hose, how would you increase the discharge of water coming from the hose?

Turn up the water at the faucet

Where is the majority of lava extruded?

at divergent plate boundaries

Which of the following loads are most likely to consist of heavy rocks and boulders?

bed load

tributary

big horn river

Which volcano type is composed mostly of pyroclastic debris?

cinder cone

What is the floodplain?

A flat area next to the river carved out by the rivers

What is the role of a drainage basin?

A drainage basin is the area drained by a river and all of its tributaries.

What would the longitudinal profile of a river flowing from a gentle valley into an ocean look like?

A gently downward sloping line

Which of the following magma types will usually flow the fastest?

Basaltic

Which of the following lists magma types in order of increasing viscosity (LEAST viscous first)?

Basaltic, andesitic, rhyolitic

Choose the best answer. Which would increase during a flood, discharge or velocity?

Both discharge and velocity will increase because there is more water flowing and it is flowing faster. Submit

Below are real-world examples of the three different types of volcanoes. Match each scene with its respective description. Which of the following best describes the type of volcano in the image?

Cinder Cone- Volcano with hole Shield- no peak. looks like a hill Composite- high peak with sharp point

Which of the following volcanic types typically produces small, steep-sided structures composed of pyroclastic material?

Cinder Cones

Which of the following volcanic forms best describes large, nearly symmetrical structures composed of interbedded lavas and pyroclastic material primarily deposited from a central vent?

Composite Volcanoes

Which portion of the stream is the most likely to become an oxbow lake in the near future?

D, the points where two different areas of the river are close to closing into a lake

Which of the following statements about drainage basins is FALSE?

Drainage basins only contain one river.

Which of the following statements about deposition and erosion around meander loops is true?

Erosion occurs where water is moving the fastest along the outside of the loop. Deposition occurs where water is moving the slowest along the inside of the loop.

What are volatiles?

Gases trapped in magma

What is the difference between magma and lava?

Magma is found below the Earth's surface, lava is found on the Earth's surface.

Which of the following is NOT an example of a base level for a river?

Rapids

Which rivers have the highest gradient?

Rivers moving down mountains

Which of the following is FALSE about magma?

Tectonic plates move around on an underground ocean of magma.

Why are shield volcanoes wider than composite volcanoes?

The lava that flows out of shield volcanoes is more fluid than the lava that flows out of composite volcanoes.

divide

appalachian mountains

What happens to rivers when they reach their base level?

They often form alluvial fans or deltas.

In which of the following tectonic plate settings are volcanoes typically NOT found?

Transform Fault

divide

a boundary, usually a hill or mountain, where water will flow in opposite directions on either side

tributary

a river that feeds into another river

watershed

an area in which all water falling in it flows out through one location

If you dip a glass of water into a river and passed the water through a very fine sieve that blocked all sediment grains from passing through, what will you be left with?

dissolved load

watershed

missouri river basin

At which plate boundary is more viscous lava found?

oceanic subduction zones

Which type of magma typically results in the greatest explosive events?

rhyolitic

Which of the following loads would make a river appear murky or dirty?

suspended load

In which cycle do rivers NOT play an important role?

tectonic plates